Package es.uam.eps.ir.relison.grid.links.recommendation.sampling

Class DistanceTwoLinkPredictionIndividualSamplerConfigurator<U>

java.lang.Object

es.uam.eps.ir.relison.grid.links.recommendation.sampling.DistanceTwoLinkPredictionIndividualSamplerConfigurator<U>

Type Parameters:

U - type of the users.

All Implemented Interfaces:

IndividualSamplingAlgorithmConfigurator<U>

public class DistanceTwoLinkPredictionIndividualSamplerConfigurator<U>
extends java.lang.Object
implements IndividualSamplingAlgorithmConfigurator<U>

Class for selecting nodes at distance 2 from the target user, considering the usual approach in link prediction, i.e. we first take all the nodes at distance 2 from the target user in the training set. Then, we take all nodes in that set with whom the target user has created a link in the test set, and we randomly select the same number of negative examples.

Field Summary

Fields

Modifier and Type	Field	Description
private static java.lang.String	USEL	Identifier of the neighbor orientation for the sampled user.
private static java.lang.String	VSEL	Identifier of the neighbor orientation for the objective users.

Constructor Summary

Constructors

Constructor	Description
DistanceTwoLinkPredictionIndividualSamplerConfigurator()

Method Summary

Modifier and Type	Method	Description
org.jooq.lambda.tuple.Tuple2<java.lang.String,IndividualSamplerFunction<U>>	grid(Parameters params)	Obtains a function for obtaining an individual sampling algorithm.
org.jooq.lambda.tuple.Tuple2<java.lang.String,IndividualSampler<U>>	grid(Parameters params, FastGraph<U> trainGraph, FastGraph<U> testGraph, es.uam.eps.ir.ranksys.fast.preference.FastPreferenceData<U,U> prefData)	Obtains an individual sampling algorithm.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

USEL

private static final java.lang.String USEL

Identifier of the neighbor orientation for the sampled user.

See Also:

Constant Field Values

VSEL

private static final java.lang.String VSEL

Identifier of the neighbor orientation for the objective users.

See Also:

Constant Field Values

Constructor Details

DistanceTwoLinkPredictionIndividualSamplerConfigurator

public DistanceTwoLinkPredictionIndividualSamplerConfigurator()

Method Details

grid

public org.jooq.lambda.tuple.Tuple2<java.lang.String,IndividualSampler<U>> grid(Parameters params, FastGraph<U> trainGraph, FastGraph<U> testGraph, es.uam.eps.ir.ranksys.fast.preference.FastPreferenceData<U,U> prefData)

Description copied from interface: IndividualSamplingAlgorithmConfigurator

Obtains an individual sampling algorithm.

Specified by:

grid in interface IndividualSamplingAlgorithmConfigurator<U>

Parameters:

params - the parameter selection for the approach.

trainGraph - the original graph.

testGraph - a test graph to consider when sampling.

prefData - the training preference data.

Returns:

a pair containing the name of the algorithm and the configured algorithm.

grid

public org.jooq.lambda.tuple.Tuple2<java.lang.String,IndividualSamplerFunction<U>> grid(Parameters params)

Description copied from interface: IndividualSamplingAlgorithmConfigurator

Obtains a function for obtaining an individual sampling algorithm.

Specified by:

grid in interface IndividualSamplingAlgorithmConfigurator<U>

Parameters:

params - the sampling parameters.

Returns:

a pair containing the name of the algorithm and a function for obtaining the configured algorithm.